Constrained-Layer Damping Analysis for Extensional Waves in Infinite, Fluid-Loaded Plates

Abstract

This study concerns the mathematical analysis of constrained-layer damping of extensional waves in plates of infinite extent, with and without fluid loading. Previous work was mostly limited to flexural waves. Some aspects of fluid loading for flexural waves may be understood by means of thin-plate theory. Therefore, a similar theory was developed for extensional waves. The description and examples presented here are based on three models: The first is an extension of Kerwin's concepts, and the third used exact elasticity theory for all three layers. It is shown that the extended Kerwin model is useful in the design of constrained-layer damping for extensional waves as well as for flexural waves.... Constrained-layer damping, Extensional waves, Flexural waves, Fluid loading, Kerwin model.

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Document Details

Document Type
Technical Report
Publication Date
Apr 01, 1993
Accession Number
ADA264987

Entities

People

  • Pieter S. Dubbelday

Organizations

  • United States Naval Research Laboratory

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Acoustic Waves
  • Acoustics
  • Composite Materials
  • Differential Equations
  • Dispersion Relations
  • Elastomers
  • Equations
  • Frequency
  • Materials
  • Mathematical Analysis
  • Military Research
  • Modulus Of Elasticity
  • Shear Modulus
  • Thickness
  • Two Dimensional
  • Underwater Sound
  • Waves

Readers

  • Structural Dynamics.